Removing Stacktrace Trim

### Jenkins and plugins versions report

Jenkins 2.332.1
junit plugin - 1119.va_a_5e9068da_d7

### What Operating System are you using (both controller, and any agents involved in the problem)?

Ubuntu 20.* (Docker)

### Reproduction steps

In a declarative pipeline:
`junit testResults: '**/findings.xml'`

For the giving `findings.xml`:
```

```
[](url)

### Expected Results

No `trim` in the Stacktrace, like:
```
Error
Missing space after the colon

Stacktrace
755 | METHOD GET_PRICING_APP_TEXT_SINGLE.
756 | DATA:lt_dd07v TYPE TABLE OF dd07v.
| ^
757 | DATA:lv_langu TYPE sy-langu.
```

### Actual Results

GitHub Pull Request - Checks:

JaaS - Blue Ocean (Tests):

JaaS - Classical (JUnit Test Result) [OK already]:

### Anything else?

_No response_

Start by reproducing the declarative pipeline case with the supplied findings.xml and inspect the JUnit result and stacktrace rendering entry points. Trace where the failure text is trimmed in the GitHub Checks and Blue Ocean presentations; done means the stacktrace retains the shown source lines without the trim while the classical JUnit result remains unchanged.

Written by the indexing model from the issue text.